X-Axis Linear Scale Change Procedure; X-Axis Linear Scale Removal; X-Axis Linear Scale Attachment - Yamaha SIGMA-G5SII Service Information

3.5. X-Axis Linear Scale Change Procedure

3.5.1. X-Axis Linear Scale Removal

(1) Shut down the power to the machine.
(2) Remove the feeder cart from the main machine.
(3) Remove the pick-up area protection cover on the machine side.
(4) Remove the cable ties which fixe the scale head cables.
(5) Loosen the two setscrews for the scale head fixing block to remove.
(6) Loosen the two setscrews for the scale head to remove it from the bracket.
(7) Loosen the five setscrews for the linear scale to remove.

3.5.2. X-Axis Linear Scale Attachment

(1) Attach the linear scale based on the frame knock pin (lower side).
Attach the linear scale after aligning it
with the knock pin side as shown in the
right figure.
Because the adjustment operation is
required after Step (2), it should be
fixed temporarily.
(2) Tighten the five setscrews to temporarily fix the linear scale.
* For the linear scale position adjustment, the following conditions should be
satisfied.
① The 0.01mm shim cannot be inserted in the gap between the linear scale and knock
pin.
② The laterally adjusted position of the X-axis linear scale should be the position
with the center value.
Fig. C41
Fig. C42
106/273
For Service Engineer
Service Information
Remove the two bolts fixing the block.
(Refer to the left figure).
*Because the scale head set bolts are
located on the rear side of the block,
remove them after the fixing block is
removed.
Push them on the pin side.
SI1705004E-00=SIGMA-G5SII Service Manual